What is the relevance of seismic considerations in code calculations?

Seismic considerations are crucial in code calculations because they specifically address how structures should be designed to withstand the forces generated by earthquakes. These forces can cause significant damage to buildings, and without proper seismic design, structures may collapse, posing serious risks to life and property. Building codes incorporate seismic design principles to ensure that buildings can absorb and dissipate energy during seismic events, thus maintaining their integrity and functionality.

Incorporating seismic considerations means evaluating the potential seismic hazards an area may face, and then applying specific design criteria to ensure that structures remain stable. This involves aspects such as material selection, structural geometry, and the overall layout and connectivity of building elements. The aim is to optimize the building's resilience and minimize the risk of structural failure during an earthquake.

Thus, option B is correct as it emphasizes the purpose of including seismic considerations in codes: to ensure that structures can effectively resist earthquake forces.